CN108706072B - Electric folding mechanism and moped with same - Google Patents

Abstract

The invention discloses an electric folding mechanism which is connected between a first part and a second part of fan-shaped folding, and is characterized in that: including folding motor, by folding motor driven transmission shaft and two hinge components, two hinge components set up respectively at the both ends of transmission shaft, every hinge component include first hinge component, rotate the second hinge component of being connected with first hinge component, first hinge component and folding motor are all fixed with first part connection, second hinge component is fixed with second part connection. A motor-assisted vehicle using the electric folding mechanism is also disclosed.

Description

Electric folding mechanism and electric bicycle using the same

Technical Field

The invention relates to a vehicle, in particular to a moped for walking, and an electric folding mechanism for the moped.

Background technique

As urban traffic becomes more and more congested and automobile exhaust emissions increase, people are increasingly inclined to use lightweight and environmentally friendly means of transportation. At the same time, as people's living standards improve, the pace of work and life accelerates, especially the fast-paced life in first-tier cities. In order to adapt to the fast-paced life, people will use mopeds as a means of transportation. Mopeds have many advantages such as being easy to carry and environmentally friendly.

Commonly used three-wheeled electric bicycles have a relatively complex overall structure, most of which cannot be folded, occupy a large space when stored, and are not easy to carry. For this reason, there are now many foldable electric bicycles. For example, a foldable electric vehicle disclosed in Chinese patent application number 201721714453.6 has a three-wheel structure, the rear wheel bracket is arranged at the rear end of the vehicle body frame, and the seat bracket is hinged to the upper rear part of the vehicle body frame; the handle bracket is a telescopic rod, and the handlebar is hinged to the upper end of the telescopic rod; the hinged part of the vehicle body frame is hinged to the lower part of the handle bracket; the vehicle body frame is divided into a left frame and a right frame that are hinged together end to end; the seat bracket is a telescopic frame, and a folding seat and a folding armrest are provided on the inner side of the middle part; another example is a foldable electric scooter disclosed in Chinese patent application number 201420290342.7, which consists of a front frame, a rear frame, a head, a support mechanism, an armrest, a seat back, a seat surface, a seat back handle, a guide wheel, a rear wheel, a battery, etc. Under the upward pulling action of the handle, the front and rear pedals rotate and fold around the pin axis, the lower support tube of the front of the vehicle rotates around the axis, the upper support tube of the front of the vehicle is retracted into the lower support tube, the front of the vehicle and the upper support tube rotate around the pin axis, the backrest rotates around the rotating axis under the downward action of external force, the support mechanism rotates around the pin axis relative to the rear pedal, and the seat surface and the support structure rotate around the pin axis; for example, a Chinese patent with application number 201620364217.5 discloses a 6-fold-1 micro household electric vehicle, including a vehicle body, a movement control component for controlling the movement of the vehicle body and a braking control component for controlling the braking of the vehicle body, the vehicle body includes a chassis, a main support frame, a backrest frame, a seat frame, a front pedal frame, a front support steering component and a locking component for preventing the vehicle body from accidentally unfolding after the vehicle body is folded.

When the foldable electric bicycle needs to be stored and folded, the body must be folded by manually operating related components, which not only involves many steps and is troublesome to operate, but also requires the user to have good coordination. Otherwise, improper operation may cause the folding components to not move properly during the folding or unfolding process, making it impossible to fold or unfold.

Summary of the invention

The first technical problem to be solved by the present invention is to provide a convenient and fast electric folding mechanism in view of the problems existing in the above-mentioned prior art.

The second technical problem to be solved by the present invention is to provide a power-assisted bicycle using the above-mentioned electric folding mechanism.

The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: an electric folding mechanism, connected between a first component and a second component of a fan-shaped folding, characterized in that it includes a folding motor, a transmission shaft driven by the folding motor and two hinge assemblies, the two hinge assemblies are respectively arranged at both ends of the transmission shaft, each hinge assembly includes a first hinge component, a second hinge component rotatably connected to the first hinge component, the first hinge component and the folding motor are both connected and fixed to the first component, and the second hinge component is connected and fixed to the second component.

In order to facilitate the motor to drive the second hinge component to rotate, it also includes a hinge transmission mechanism connected between the first hinge component and the second hinge component, the transmission shaft extends into the first hinge component, the hinge transmission mechanism includes a rotating shaft driven to rotate by the transmission shaft, the rotating shaft is parallel to the transmission shaft, the rotating shaft is connected and fixed to one end of the second hinge component, and the other end of the second hinge component is connected and fixed to the second component.

To facilitate the transmission shaft to drive the rotating shaft to rotate, the hinge transmission mechanism also includes a primary gear sleeved on the transmission shaft and a final gear sleeved on the rotating shaft, and the primary gear and the final gear are directly meshed or indirectly meshed through at least one gear.

In order to facilitate the motor to drive the transmission shaft to rotate after deceleration, the folding motor has an output shaft, the output shaft and the transmission shaft are arranged in parallel, and a gear transmission mechanism is arranged between the output shaft and the transmission shaft.

The technical solution adopted by the present invention to solve the above-mentioned second technical problem is: an electric bicycle with the electric folding mechanism as described above, including a front beam and a rear beam, the first component is the rear beam, the second component is the front beam, two first hinge components are connected and fixed on the left and right sides of the bottom of the rear beam, and two second connecting components are connected and fixed on the left and right sides of the bottom of the front beam.

Preferably, the bicycle further comprises a front handlebar and a seat, wherein the front handlebar is arranged at the front end of the front beam, and the seat is arranged above the rear beam.

In order to facilitate the folding of the front handlebars and the seat during the folding of the front beam and the rear beam, a front connecting rod and a rear connecting rod are also included, one end of the front connecting rod is rotatably connected to one end of the connecting shaft on the front handlebar, and the other end of the front connecting rod is rotatably connected to the front side of the bottom of the rear beam; one end of the rear connecting rod is rotatably connected to the rear side of the bottom of the front beam, and the other end of the rear connecting rod is rotatably connected to the seat.

Preferably, the seat comprises a seat back, a seat platform and a folding rod, wherein the folding rod is in the shape of a bent rod, one end of the folding rod is connected to the seat back, and the other end is connected to the rear connecting rod.

Preferably, in order to make the folding process smooth, the front connecting rod, the rear connecting rod and the folding rod are respectively provided with two, and the two folding rods are connected by a synchronous shaft.

To prevent the electric bicycle from loosening after being folded, connecting rods are respectively provided on both sides of the front handlebar near the bottom, one end of each connecting rod is fixedly connected to the front handlebar, and a connecting shaft is connected between the other ends of the two connecting rods. A folding locking device is provided at the bottom of the rear beam, which can lock the connecting shaft after the electric bicycle is folded.

Compared with the prior art, the advantages of the present invention are: by providing two hinge components that are rotatably connected and driven by a motor, the two components can be conveniently driven to fold in a fan shape; by providing a connecting rod mechanism, the electric folding mechanism can be applied to a moped, and the folding of the front handlebar and the seat can be driven by the folding of the front beam and the rear beam.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a moped according to an embodiment of the present invention;

FIG2 is a schematic structural diagram of a moped according to an embodiment of the present invention (viewed from bottom to top);

FIG3 is a schematic diagram of an electric folding mechanism according to an embodiment of the present invention;

FIG4 is a schematic diagram of the exploded structure of the electric folding structure according to an embodiment of the present invention;

FIG5 is a schematic diagram of the hidden bottom cover of the electric bicycle of FIG2 ;

FIG6 is a schematic diagram of an electric wheel-collecting mechanism of a power-assisted bicycle according to an embodiment of the present invention;

FIG7 is an exploded schematic diagram of the electric wheel-collecting mechanism of the electric bicycle according to an embodiment of the present invention;

FIG8 is a schematic diagram of a folding locking device of a power-assisted bicycle according to an embodiment of the present invention;

FIG9 is a schematic diagram of the exploded structure of the folding locking device of FIG8 ;

FIG10 is a further exploded structural schematic diagram of the folding locking device of FIG9 (locked state);

FIG11 is a schematic diagram of the exploded structure of the folding locking device of FIG10 in an open state;

FIG. 12 is a schematic diagram of the folded state of the electric bicycle according to the embodiment of the present invention.

Detailed ways

The present invention is further described in detail below with reference to the accompanying drawings.

Referring to Figures 1 and 2, an electric bicycle includes a front handlebar 1, a front beam 2, a rear beam 3, a seat 4 and wheels, wherein the front handlebar 1 is arranged at the front end of the front beam 2, the seat 4 is arranged above the rear beam 3, the front beam 2 and the rear beam 3 can be folded relative to each other, and the wheels include a driving wheel 51 arranged at the bottom end of the front beam 2, and two driven wheels 52 arranged on the rear side of the rear beam 3.

Connecting rods 111 are respectively provided on both sides of the front handlebar 1 near the bottom. One end of each connecting rod 111 is fixedly connected to the front handlebar 1 , and a connecting shaft 112 is connected between the other ends of the two connecting rods 111 .

An electric folding mechanism is provided between the rear side of the front beam 2 and the front side of the rear beam 3, so that the front beam 2 and the rear beam 3 can be relatively folded or opened in a fan shape. Referring to FIGS. 2 to 4 , the electric folding mechanism includes a folding motor 61, a transmission shaft 62, and two hinge assemblies 63, wherein the folding motor 61 is provided at the bottom of the rear beam 3, and has an output shaft 611, the output shaft 611 and the transmission shaft 62 are provided in parallel, and a gear transmission mechanism 64 is provided between the two shafts, so that when the folding motor 61 is running, the output shaft 611 can drive the transmission shaft 62 to rotate after being decelerated by the gear transmission mechanism 64. In this embodiment, the gear transmission mechanism 64 includes a first transmission gear 641 provided on the output shaft 611 and a second transmission gear 642 provided on the transmission shaft 62, and a gear box cover is provided outside the first transmission gear 641 and the second transmission gear 642, and the gear box cover includes a first gear box cover 6431 and a second gear box cover 6432 that are interlocked.

Two hinge assemblies 63 are respectively arranged at the two ends of the transmission shaft 62, and each hinge assembly 63 includes a first hinge member 631, a second hinge member 632, and a hinge transmission mechanism 633 connected between the first hinge member 631 and the second hinge member 632, wherein the first hinge member 631 includes a first hinge box cover 6311 and a second hinge box cover 6312, which are buckled together, and the hinge transmission mechanism 633 is arranged in the space between them. The hinge transmission mechanism 633 includes a primary gear 6331 sleeved on the transmission shaft 62, a rotating shaft 6332 connected to the second hinge member 632, and a final gear 6333 sleeved on the rotating shaft 6332, the rotating shaft 6332 is parallel to the transmission shaft 62, and multiple gears can be arranged between the primary gear 6331 and the final gear 6333, or no gears can be arranged, as long as the rotation of the transmission shaft 62 is transmitted to the rotating shaft 6332. One end of the rotating shaft 6332 extends out of the first hinge member 631 and penetrates into the second hinge member 632. A connecting hole 6321 is provided on one end of the second hinge member 632, and the rotating shaft 6332 penetrates into the connecting hole 6321 and is connected and fixed to the second hinge member 632. In order to facilitate the rotation of the second hinge member 632 when the rotating shaft 6332 rotates, the rotating shaft 6332 and the connecting hole 6321 are both hexagonal.

The two first hinge members 631 are connected and fixed to the left and right sides of the bottom of the rear beam 3, and one end of the second hinge member 632 away from the connection hole 6321 is connected and fixed to the left and right sides of the bottom of the front beam 2. Therefore, when the folding motor 61 is running, the output shaft 611 drives the transmission shaft 62 to rotate, and the hinge transmission mechanism 633 drives the second hinge member 632 to rotate relative to the first hinge member 631, thereby causing the front beam 2 to rotate relative to the rear beam 3 and folding.

The above-mentioned electric folding mechanism can also be used for opening and closing other fan-shaped doors or windows, as well as other electrical appliances or equipment that need to be folded, as long as the first hinge component 631 is connected and fixed to the first component of the first and second components that need to be folded, and the second hinge component 632 is connected and fixed to the second component of the first and second components that need to be folded.

Referring to Fig. 5 to Fig. 7, in order to make the two rear wheels 52 in the wheel automatically shrink when the electric bicycle is folded and automatically extend when the electric bicycle is unfolded, the electric bicycle also includes an electric wheel-collecting mechanism. In the present embodiment, the electric wheel-collecting mechanism includes a wheel-collecting motor 71, a bevel gear assembly 72 and a wheel transmission assembly 73. The bevel gear assembly 72 includes a first bevel gear 721 located in the middle and second bevel gears 722 located on both sides of the first bevel gear 721. The first bevel gear 721 is connected to the output shaft 711 of the wheel-collecting motor 71, and the second bevel gears 722 are meshed with the first bevel gear 721. The bevel gear assembly 72 also includes a bevel gear box 723, which includes a first bevel gear box cover 7231 and a second bevel gear box cover 7232 that are interlocked, and the above three bevel gears are arranged in the bevel gear box 723.

When the wheel collecting motor 71 is running, its output shaft 711 drives the first bevel gear 721 to rotate, thereby driving the second bevel gear 722 meshing with the first bevel gear 721 to rotate, and a certain angle (acute angle) is formed between the rotation axes of the two second bevel gears 722.

The wheel transmission assembly 73 has two groups, each of which includes a first screw rod 731, a sleeve 732 and a connecting rod 733. The sleeve 732 is connected and fixed to the rear beam 3 through a fixing bracket 7321. One end of the first screw rod 731 is connected to the second bevel gear 722, and the other end is inserted into the sleeve 732. One end of the connecting rod 733 is inserted into the sleeve 732, and the end is located at the outer periphery of the first screw rod 731. The two can be connected by a thread sleeve, and the other end of the connecting rod 733 is connected to the rear wheel 52. When the first screw rod 731 rotates, the thread sleeve can drive the connecting rod 733 to move linearly.

Thus, the two wheel transmission assemblies 73 form a V-shape as a whole, and the connecting rod 733 can be extended and retracted relative to the sleeve 732 in the extension direction of the sleeve 732, thereby driving the rear wheel 52 to be retracted or deployed. The rear beam 3 has a longitudinal axis X1 in the front and rear directions, which is coaxial with the wheel retracting motor 71, and a transverse axis X2 in the left and right directions, which is coaxial with the rotating shaft of the rear wheel 52. The electric wheel retracting mechanism and the two rear wheels 52 are symmetrical relative to the longitudinal axis X1, and the transverse axis X2 is perpendicular to the longitudinal axis X1. The wheel transmission assembly 73 is inclined on the horizontal plane relative to the longitudinal axis X1. Thus, in the process of retracting the rear wheels 52, the distance between the two rear wheels 52 and the longitudinal axis X1 and the relative distance between the two rear wheels 52 on the transverse axis X2 are simultaneously reduced. In the process of deploying the rear wheels 52, the distance between the two rear wheels 52 and the longitudinal axis X1 and the relative distance between the two rear wheels 52 on the transverse axis X2 are simultaneously expanded.

A bottom cover 74 is provided to seal the bottom of the electric bicycle, the wheel collecting motor 71 and the bevel gear assembly 72 .

The electric bicycle further includes a front connecting rod 81 and a rear connecting rod 82, wherein the front connecting rod 81 has two, one end of each front connecting rod 81 is rotatably connected to one end of the connecting shaft 112 on the front handlebar 1, and the other end of each front connecting rod 81 is rotatably connected to the front side of the bottom of the rear beam 3. The rear connecting rod 82 has two, one end of each rear connecting rod 82 is rotatably connected to the rear side of the bottom of the front beam 2, and the other end of each rear connecting rod 82 is rotatably connected to the seat 4. The seat 4 includes a seat back 41, a seat platform 42 and a folding rod 43, the folding rod 43 is in the shape of a bent rod, the bending angle can be about 90°, and the bending position corresponds to the rear end of the rear beam 3. The folding rod 43 has two, one end of each is connected to the seat back 41, and the other end is rotatably connected to the corresponding rear connecting rod 82. The two folding rods 43 are connected by a synchronous shaft 44.

When the moped needs to be folded, the folding motor 61 of the electric folding mechanism is started, and the first hinge member 631 and the second hinge member 632 of the hinge assembly 63 rotate relative to each other, thereby causing the front beam 2 to rotate downward toward the rear beam 3, pushing the front beam 2 and the rear beam 3 to be lifted upward at the connection position; during the rotation of the front beam 2, the front connecting rod 81 is driven to move, thereby pulling the folding rod 43 of the seat 4 to move toward the front beam 2, thereby driving the seat 4 to rotate downward; at the same time, the rear connecting rod 82 is driven by the rear beam 3 to move, pulling the front handlebar 1 to rotate downward; during the rotation of the front beam 2 and the rear beam 3, the wheel retracting motor 71 of the electric wheel retracting mechanism is started, and the rear wheel 52 shrinks along the extension direction of the sleeve 732 until the connecting rod 733 is received in the sleeve 732 and the rear wheel 52 is close to the end of the sleeve 732. The moped after folding is shown in FIG. 12.

In order to prevent the folded bicycle from being loosened due to stress, a folding locking device is also provided, and the connecting shaft 112 on the front handlebar 1 cooperates with the folding locking device. When the bicycle is folded, the connecting shaft 112 can be locked by the folding locking device.

Referring to Fig. 8 to Fig. 10, the folding locking device is similar to the electric suction lock of the tailgate of an automobile, and includes an actuator and a locking mechanism. The actuator includes a locking motor 91, a second screw rod 92 and a wire sleeve 93, and also includes a box 94. The second screw rod 92 and the wire sleeve 93 are arranged in the box 94, and the wire sleeve 93 extends out of the box 94. The locking motor 91 drives the second screw rod 92 to rotate, thereby allowing the wire sleeve 93 to move linearly along the extension direction of the second screw rod 92. The actuator also includes a third micro switch 932 arranged on the box 94 and extending into the box 94, and the third micro switch 932 is used to cooperate with the wire sleeve 93.

The locking mechanism may adopt existing technology, such as including a lock frame 95 , a support frame 96 located in the lock frame 95 , a stopper assembly 97 , a lock tongue assembly 98 and a lock box 99 .

Among them, the lock frame 95 includes a main lock frame 951 and an auxiliary lock frame 952, which cooperate with each other to form a cavity therebetween, and the support frame 96, the block assembly 97 and the lock tongue assembly 98 are arranged in the cavity between the main lock frame 951 and the auxiliary lock frame 952.

The support frame 96 is provided with a first positioning shaft hole 961 and a second positioning shaft hole 962 which penetrate through the support frame 96 at intervals.

The block assembly 97 includes a block 971, on which a first positioning shaft 972 and a first lever 973 are provided. In this embodiment, the block 971 is located on the side of the support frame 96 facing the main lock frame 951, that is, the block 971 is located between the support frame 96 and the main lock frame 951 and away from the auxiliary lock frame 952. One end of the first positioning shaft 972 is rotatably connected to the main lock frame 951, and the other end passes through the block 971 and then passes through the first positioning shaft hole 961 on the support frame 96, so that the block 971 is rotatably arranged in the lock frame 95. The first lever 973 extends out of the lock frame 95 (auxiliary lock frame 952), so that the first lever 973 can be operated from the outside of the locking mechanism. Alternatively, a hole can be opened on the auxiliary lock frame 952 to contact the first lever 973. As long as the first lever 973 can be operated outside the lock frame 95, it will be sufficient.

The lock tongue assembly 98 includes a lock tongue 981, and the lock tongue 981 and the stopper 971 are arranged adjacently and spaced apart. The lock tongue 981 is provided with a second positioning shaft 982 and a second lever 983. In this embodiment, the lock tongue 981 is located on the side of the support frame 96 facing the main lock frame 951, that is, the lock tongue 981 is located between the support frame 96 and the main lock frame 951 and away from the auxiliary lock frame 952. One end of the second positioning shaft 982 is rotatably connected to the main lock frame 951, and the other end passes through the lock tongue 981 and then passes through the first positioning shaft hole 961 on the support frame 96, so that the lock tongue 981 is rotatably arranged in the lock frame 95.

The first positioning shaft 972 and the second positioning shaft 982 may be arranged correspondingly and adjacently, and the first lever 973 and the second lever 983 correspond to each other and are respectively close to two opposite sides of the main locking frame 951 .

A first torsion spring (not shown) is disposed on the periphery of the first positioning shaft 972, one end of which is disposed on the main lock frame 951, and the first torsion spring enables the stopper 971 to always maintain a reset tendency to rotate toward the direction of the lock tongue 981. A second torsion spring (not shown) is disposed on the periphery of the second positioning shaft 982, one end of which is disposed on the main lock frame 951, and the second torsion spring enables the lock tongue 981 to maintain a reset tendency to open the lock. Thus, the stopper assembly 97 and the lock tongue assembly 98 can always interact with each other in their initial force.

The lock tongue assembly 98 further includes a first protrusion 984 and a second protrusion 985 disposed on the lock tongue 981, and a first micro switch 963 and a second micro switch 964 are disposed on the support frame 96. The first protrusion 984 can cooperate with the first micro switch 963, and the second protrusion 985 can cooperate with the second micro switch 964. The first micro switch 963 and the second micro switch 964 are both electrically connected to the locking motor 91, thereby outputting a control signal to the locking motor 91.

A first abutment portion 9711 is formed on the side of the stopper 971 close to the locking tongue 981 and protrudes toward the locking tongue 981. A second abutment portion 9811 and a third abutment portion 9812 are formed on the side of the locking tongue 981 close to the stopper 971 and protrudes toward the stopper 971. Both the second abutment portion 9811 and the third abutment portion 9812 are used to cooperate with the first abutment portion 9711.

The actuator is arranged at one end of the lock frame 95. The main lock frame 951 is provided with a first lock opening 9511 for inserting the connecting shaft 112. The first lock opening 9511 is formed by being recessed inward from the other end of the main lock frame 951 away from the actuator. The lock tongue 981 is formed by being recessed inward from one end of the lock block 971 away from the second lever 983 and away from the stopper 971 to form a second lock opening 9813. The two lock openings are located outside the lock box 99.

In the above embodiment, the silk sleeve 93 directly acts on the first lever 973 and the second lever 983. Alternatively, the silk sleeve 93 may be disposed in the box 94, and a shifting shaft 931 is disposed on the silk sleeve 93, extending out of the box 94 toward the locking mechanism.

The working principle of the above folding locking device is:

1. Locking process: After the moped is folded, the connecting shaft 112 on the front handlebar 1 hits the second lock port 9813, causing the lock tongue 981 to rotate counterclockwise, and the first protrusion 984 on the lock tongue 981 presses against the first micro switch 963, the first micro switch 963 is closed, and outputs a signal to the locking motor 91 to start it, thereby the locking motor 91 transmits the output to the wire sleeve 93 through the second screw rod 92, causing the wire sleeve 93 to move (or rely on the toggle shaft 931) to push the second toggle rod 983 to toggle the lock tongue 981 to rotate (and at the same time drive the stopper 971 to rotate), The second lock port 9813 pulls the connecting shaft 112, so that the front beam 2 and the rear beam 3 are tightened, and the first abutment portion 9711 abuts against the third abutment portion 9812 on the lock tongue 981, so that the lock tongue 981 cannot rotate in the opening direction and maintains the current state; finally, the actuator is controlled to operate in the reverse direction through the full lock signal, and the wire sleeve 93 moves in the direction of the second lever 983 away from the lock tongue assembly 98 until it stops at the origin position (the wire sleeve 93 presses against the third micro switch 932), and the locking action is completed (from the open state of Figure 11 to the locked state of Figure 10).

2. Unlocking process:

First, a signal is input to the locking motor 91 through the control system of the electric bicycle, the locking motor 91 starts to operate, and the silk sleeve 93 (or the toggle shaft 931) moves in a straight line toward the first toggle rod 973 of the block assembly 97 until it contacts the first toggle rod 973 of the block assembly 97; thereafter, the silk sleeve 93 continues to move to rotate the toggle block 971 in the lock opening direction, so that the first abutting portion 9711 on the block 971 is separated from the second abutting portion 9811 on the lock tongue 981, thereby causing the lock tongue 981 to rotate. At this time, the second protrusion 985 on the lock tongue 981 no longer presses the second micro switch 965, and the folding motor 61 operates, so that the electric bicycle is unlocked. The electric vehicle is unfolded, whereby the lock tongue 981 rotates in the opening direction, the first protrusion 984 on the lock tongue 981 no longer presses the first microswitch 963, the full lock signal is released, and the first abutment portion 9711 abuts against the second abutment portion 9811 on the lock tongue 981, so that the lock tongue 981 cannot rotate in the locking direction and maintains the current state; finally, the actuator is controlled to operate in the reverse direction through the unlocking signal of the electric vehicle, and the thread sleeve 93 moves in the direction away from the first lever 973 on the block 971 until it stops at the origin position (the thread sleeve 93 presses the third microswitch 932), and the unlocking action is completed (from the locked state of Figure 10 to the opened state of Figure 11).

Claims (8)

1. The utility model provides a power-assisted vehicle, includes preceding girder (2), back girder (3) and electronic folding mechanism, preceding girder (2) and back girder (3) are fan-shaped folding, power-assisted vehicle still includes drive wheel (51) and two rear wheels (52) of setting in back side of back girder (3) of setting in preceding girder (2) bottom; the method is characterized in that: the electric folding mechanism comprises a folding motor (61), a transmission shaft (62) driven by the folding motor (61) and two hinge assemblies (63), wherein the two hinge assemblies (63) are respectively arranged at two ends of the transmission shaft (62), each hinge assembly (63) comprises a first hinge member (631) and a second hinge member (632) rotationally connected with the first hinge member (631), the first hinge member (631) and the folding motor (61) are connected and fixed with the rear girder (3), and the second hinge member (632) is connected and fixed with the front girder (2);

The power-assisted vehicle further comprises an electric wheel collecting mechanism, the electric wheel collecting mechanism comprises a wheel collecting motor (71), a bevel gear assembly (72) and a wheel transmission assembly (73), the bevel gear assembly (72) comprises a first bevel gear (721) driven to rotate by the wheel collecting motor (71) and second bevel gears (722) positioned on two sides of the first bevel gear (721), the second bevel gears (722) are meshed with the first bevel gears (721), and a certain angle is formed between rotating shafts of the two second bevel gears (722); the wheel transmission assemblies (73) are provided with two groups which integrally form a V shape, each group of wheel transmission assemblies (73) comprises a sleeve (732) fixedly connected with the rear girder (3) and a connecting rod (733) which can extend and retract relative to the sleeve (732) in the extending direction of the sleeve (732), and the connecting rod (733) is connected with the rear wheel (52);

The moped further comprises a front handlebar (1), a front connecting rod (81) and a rear connecting rod (82), wherein the front handlebar (1) is arranged at the front end part of the front girder (2), connecting rods (111) are respectively arranged at two sides of the front handlebar (1) close to the bottom, one end of each connecting rod (111) is fixedly connected with the front handlebar (1), a connecting shaft (112) is connected between the other ends of the two connecting rods (111), one end of the front connecting rod (81) is rotatably connected with one end of the connecting shaft (112), and the other end of the front connecting rod (81) is rotatably connected with the front side of the bottom of the rear girder (3); one end of the rear connecting rod (82) is rotationally connected with the rear side of the bottom of the front girder (2), and the other end of the rear connecting rod (82) is rotationally connected with the seat (4);

the bottom of the rear girder (3) is provided with a folding locking device which can lock the connecting shaft (112) after the scooter is folded, and the folding locking device comprises:

a lock frame (95), wherein one end of the lock frame (95) is inwards recessed to form a first locking opening (9511) for inserting a connecting shaft (112);

A stop block assembly (97) and a lock tongue assembly (98) are adjacently arranged at one end in the lock frame (95), the stop block assembly (97) comprises a stop block (971) which is rotationally arranged in the lock frame (95) and has a resetting trend, a first deflector rod (973) which is communicated with the outside of the lock frame (95) and can move relative to the lock frame (95) is arranged on the stop block (971), the lock tongue assembly (98) comprises a lock tongue (981) which is rotationally arranged in the lock frame (95) and has a resetting trend, a second deflector rod (983) is arranged on the lock tongue (981), and a second locking notch (9813) is formed on the lock tongue (981); and

The actuating mechanism is arranged at the other end of the lock frame (95), the actuating mechanism comprises a motor (91), a screw rod (92) driven by the motor (91) and a screw sleeve (93) arranged on the screw rod (92), and the screw sleeve (93) can linearly move between the first deflector rod (973) and the second deflector rod (983) to act on the first deflector rod (973) or the second deflector rod (983) so as to drive the stop block (971) or the lock tongue (981) to rotate to change the locking state.

2. The power assist vehicle of claim 1, wherein: each hinge assembly (63) further comprises a hinge transmission mechanism (633) connected between the first hinge member (631) and the second hinge member (632), the transmission shaft (62) extends into the first hinge member (631), the hinge transmission mechanism (633) comprises a rotation shaft (6332) driven by the transmission shaft (62) to rotate, the rotation shaft (6332) is parallel to the transmission shaft (62), the rotation shaft (6332) is fixedly connected with one end of the second hinge member (632), and the other end of the second hinge member (632) is fixedly connected with the second component.

3. A power assisted vehicle according to claim 2, characterized in that: the hinge transmission mechanism (633) further comprises a primary gear (6331) sleeved on the transmission shaft (62) and a final gear (6333) sleeved on the rotating shaft (6332), and the primary gear (6331) and the final gear (6333) are directly meshed or indirectly meshed through at least one gear.

4. The power assist vehicle of claim 1, wherein: the folding motor (61) is provided with an output shaft (611), the output shaft (611) and the transmission shaft (62) are arranged in parallel, and a gear transmission mechanism (64) is arranged between the output shaft (611) and the transmission shaft (62).

5. The power assist vehicle according to any one of claims 1 to 4, characterized in that: two first hinge members 631 are fixedly connected to the left and right sides of the bottom of the rear girder 3, and two second connection members 632 are fixedly connected to the left and right sides of the bottom of the front girder 2.

6. The power assist vehicle of claim 5, wherein: the novel seat also comprises a seat (4), and the seat (4) is arranged above the rear girder (3).

7. The power assist vehicle of claim 6, wherein: the seat (4) comprises a seat back (41), a seat table (42) and a folding rod (43), wherein the folding rod (43) is in a bent rod shape, one end of the folding rod (43) is connected to the seat back (41), and the other end of the folding rod is connected with a rear connecting rod (82).

8. The power assist vehicle of claim 7, wherein: the front connecting rod (81), the rear connecting rod (82) and the folding rods (43) are respectively provided with two folding rods (43) which are connected through a synchronizing shaft (44).